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Question:

The correct set of reagents for the following conversion is:

P4/I2,Na,P2O5/Δ

P4/I2,Na,conc.H2SO4

P2O5,NaBH4

P2O5/Δ,P4/I2,Na

Solution:

2(CH3)2CHCOOH + P4/I2,Na --------> HOOC-C(CH3)2-C(CH3)2-COOH + P2O5,Δ --------> given product
Option B is correct.